Former Sports Minister Edwin Poots has called for an investigation by UEFA over sectarian chanting at the Cliftonville match against Celtic in Belfast on Wednesday night.
In the closing stages of the game fans could be clearly heard chanting abuse directed at the Orange Order.
BBC commentator and former Glentoran footballer Chris Morgan was also verbally abused during the match.
Mr Poots said: “I had a previous role as sports minister and one of the things that a lot of people said why they didn’t support Northern Ireland was because of sectarian chanting, but as someone who attends Northern Ireland matches it has been largely eliminated and doesn’t belong to the terraces.
“In recent years Glasgow Rangers have got fined a number of times by UEFA for sectarian chanting. UEFA have taken a very clear stance on this.
“It’s very disappointing that during a big night’s footballing spectacle a number of fans decided to hijack it and engage in the way that they did.
“It’s something that Cliftonville Football Club need to deal with, identifying the culprits and root them out.”
A spokeswoman for the BBC said: “BBC Northern Ireland covered last night’s Champions League match – the first time the champions of Scotland and Northern Ireland had met in a competitive game. The sound levels for this game were consistent with all other sporting outside broadcasts covered by the BBC.
“We apologised live on air following some abusive comments which had been directed at a member of the BBCNI commentary team.
“We made adjustments to our sound levels immediately following this incident and as the match continued.
“We can confirm that we have received some complaints following the game.”
A spokesman for Cliftonville said it would look into specific incidents if brought to their attention.